French label A.P.C. is known for its clean take on classic styles, and this white cotton Oxford shirt upholds the reputation. Straightforward in design, it has a neat button-down collar and slim cut, so it will look smart, even when teamed with cuffed jeans. Try yours under a sharp blazer. Shown here with Mr P. T-shirt, A.P.C. trousers, Acne Studios jacket, Common Projects sneakers.